How to identified that it was impacted?

[kerlion]

I have tested on OpenSSH_8.9p1 which was installed a fem monthes ago with default settings.

But it seems that , it has no impact, why?

send_packet: Resource temporarily unavailable
send_packet: Resource temporarily unavailable
send_packet: Resource temporarily unavailable
Estimated parsing time: 0.000671 seconds

for CentOS 7, it show:
Failed to establish connection, attempt 19996
inet_pton: Success
Failed to establish connection, attempt 19997
inet_pton: Success
Failed to establish connection, attempt 19998
inet_pton: Success
Failed to establish connection, attempt 19999

[dreamingday]

You can carefully read the principles in regresshion.txt; this vulnerability seems to only affect Debian-based systems.